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Fast Download,all pages present,an excellent copy.THis enabled to find the origional part numbers and chase them up. The cartridge is proving difficult to find but at least I know the origional part number.Thanks to all.
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The manual was as described. Complete with parts list and technical information. Fast delivery.
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Simple and fast...
The diagrams are clear and legible; i have been a great help.
The site is very reliable and precise thanks.
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Very easy site. Great service and quick release for download. Manuals are of good quality.
Joop - The Netherlands
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Very good manual, in depth and complete. Only criticism is that some of the circuit diagrams are slightly blurry and hard to follow for long periods of time, but this is to be expected. Perfect for any maintenance required. Also contains the wiring diagrams of the control cable for constructing extensions.
CPU (LSI201: MSM6387-13)
The CPU contains a sound data ROM and a DAC (Digital to Analog Convertor), and it provides a sound waveform in accordance with the pressed key and the selected tone. The following table shows the pin functions of LSI201. Pin No. 1, 2 3 4 5 6 7 8 9 10 11 ~ 18 19, 20 21 ~ 30 Terminal TEST1, TEST2 RESET AVDD OUT AGND GND COSI COSO VDD KI0 ~ KI7 KO11, KO10 KO9 ~ KO0 Out In In In In Out In In In In/ Out Function Not used. Connected to ground. Power ON reset terminal. When the power switch is turned on, the terminal receives a low level signal and the internal circuits of the LSI are initialized. +5 V sorce for the built-in DAC Sound waveform output Ground (0 V) source for the built-in DAC Ground (0 V) source 21.725 MHz clock pulse input Not used. +5 V source Input terminals from keys and switches Not used. Key and switch scan signal outputs
C202
FILTER BLOCK
Since the sound signal from the CPU is a stepped waveform, the filter block is added to smooth the waveform.
AVDD Q201 2SC1740SQ R203 R204
From CPU
C203
To main volume
R202
AG
C201
AG
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 $4.99 CTK50 CASIO
Owner's Manual Complete owner's manual in digital format. The manual will be available for download as PDF file aft…
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